Window construction



March 23, 1954 o, POLSON ETAL WINDOW CONSTRUCTION 2 Sheets-Sheet 1 Filed Sept. 7, 1950 Inuentofs Olien Palson Theodore J. nelson A; 34.44;. F wry. mm

March 23, 1954 o, PoLsoN ET AL WINDOW CONSTRUCTION 2 Sheets-Sheet 2 Filed Sept. 7, 1950 Inventor's Olden Poison Theodore J.

he lson Patented Mar. 23, 1954 thel appended rilaims;

slidingwnd inwaf'd'"swingingi-mn vement," ea'ch *df eacmcayri er andfits terference, the sash I6 is made in this instance with a somewhat smaller lateral dimension than the sash l8. Consequently, the front guiding strip 28 is somewhat thinner than the rear guiding strip 29 so as to compensate for this dimensional difierence.

Provision is made for releasably locking each sash against angular movement about the pivot points in a simple yet effective manner. This is accomplished by the use of one or more latches 3| each susceptible of locking engagement with the upper portion of one of the sashes and the guiding strip associated therewith. Since the latches 3| are substantially identical, a detailed description of one, together with the parts of the window associated therewith, will suifice for all. Accordingly, reference will be made to the latch 3| associated with the lower sash i8 and located on the right-hand side of the latter (as viewed in Figs. 1, 3 and 4). The latch 3| is fashioned in the form of a short metal bar pivoted to an outstruck lug 32 on the sash carrier 24 as by means of a rivet 3d, the guiding strip 253 being provided with a longitudinally extending latch channel to receive the lug 3i and the pivoted end of the latch. By reason of this structure, the latch 3| is swingable between a raised or upright position illustrated in Figs. 3 and 5 and a lowered position illustrated in 2 and 4. Adjacent the upper end of its side rail iil, the sash I8 is notched out to define a latch stop 36. Thus when the latch 3| is in its lowered position and an attempt is made to swing the sash inwardly about the pivot points 25., the latch stop 33 is immediately accosted by the latch 3| to preclude such movement.

Provision is also made for interlocking the sash l8 and its carriers 24 against vertical sliding movement as an incident to shifting the latch 3| from lowered to raised position to release the sash l8 for inward swinging movement. This is accomplished by eifecting positive engagement between the latch 3| and the guiding strip 28 when the latch is in its upright position. in

furtherance of such objective, the latch 3| is pro vided with a locking pin 38 projecting outwardly therefrom. To receive the pin 38, the guiding strip is formed with a notch 39 which opens into the latch channel 35. For safety purposes, the top and bottom walls of the notch (iii are undercut, the notch in this instance having a substantially dovetailed profile (see Fig. '7). Once the locking pin 38 enters the notch 39, any attempt to move the sash vertically simply cams the pin 38 into deeper engagement with the notch 39 and accidental disengagement of the latch 3! is entirely prevented. In order to permit the latch to be shifted from its upright position to its lowered position, the free end of the latch is preferably formed with a dull point which is readily engageable by the finger. To further facilitate handling of the latch 3|, the surrounding portion of the guiding strip 23 is cut away to define a finger notch 46.

When two of the latches 3| are mounted on the carriers for the sash It in the manner described above, an effective burglar-proof locking arrangement is readily obtained by placing one latch in raised position and the other in lowered position. In this condition, the upright latch locks the window against vertical movement and if the notches 33 and 4|! are judiciously located, the possibility of having an unauthorized person reach in from the outside and release the latch is eliminated regardless of whether the in this instance sash is maintained in a closed or slightly opened. condition. The lowered one of the latches 3| of course locks the sash it against inward swinging movement. When both of the latches 3| are down or in their lowered position, free vertical sliding movement of the sash I8 is permitted. Conversely, when both of the latches 3| are in their raised position, free inward swinging movement of the sash i3 is permitted.

In the foregoing description of the latching arrangement, reference has been made only to the lower sash l8 rather than the upper sash It. The latter is constructed in a similar manner, the latches 3| being mounted near the tops of the sash carriers 24 and the guiding strips 29 being formed with latching channels 35 and one or more locking pin and finger notches (not shown) similar to the notches 39, t0. Instead of the upstanding latch stops 36, however, the upper sash has the latches 3| recessed in its top rail, the rear wall of the recess serving as a latch stop. To permit lifting of the latches 3| to raised position, the top rail of the upper sash it has finger notches 4| at the ends of the latch recesses.

For the purpose of yieldably positioning the lower sash l8 both vertically and angularily, a common frictional motion arresting means is utilized. While such means may be either singular or plural, the latter is preferable and will presently be described. Accordingly, there are mounted adjacent the intersection of the head jamb H! with the two side jambs |2 a pair of anchor fittings 42. Pivoted upon respective ones of the latter and swingable in a generally vertical plane are a pair of guide bars 44. Each of the latter is adapted to telescope into a motion arrester d5 of the general type disclosed in our copending application Serial No. 785,262, supra. For present purposes, it might be noted that the motion arrester 45 is of the ball and inclined wedge type, being adapted to yieldably resist relative motion in either direction between the guide bar M and the arrester housing Q6. The extent of this yieldable resistance can be varied as by means of adjusting screws 48. In the present instance, each motion arrester housing 46 has fixed thereto a lug 49 which is pivotally attached as at 50 to the Weatherstripping 26 of the sash I8. By reason of the foregoing structure, it willbe perceived that relative sliding movement between the guide bar id and the motion arrester 45 can take place regardless of whether the sash I8 is being slid vertically or, on the other hand, is being rocked inwardly about the pivot points 25. By proper adjustment of the arrester Q5, the frictional resistance of the same may be regulated sufiiciently to allow easy positioning of the sash l8 vertically or angularly at any desired point.

For the purpose of counterbalancing the sash it in both the vertical and angular directions. the window if) is provided with at least one and preferably a pair of tensile springs 5|. Each of the latter is interposed between one of the pivot points 56 on the sash Weatherstripping 2t and, a stud 52 fixed either to a corresponding one of the anchor fittings of the guide bars ML The springs 5| are respectively housed within recesses 54 each defined by one of the side jambs l2, the front guiding strip 28, and the Weatherstripping 28 of the sash l8. Thus when the sash i8 is in its upright or vertical condition, the guide bar 44 is also housed within the recess 5-1 in overlying relation with the spring 5| so as to conceal the same. In the present instance, the upper sash I6 is provided with 42 or the upper end portion of one- The guide bars a pair of counterbalancing tensile springs 55 similar to those utilized for the lower sash I8. 44 and motion arresters 45 are, however, preferably eliminated because the upper sash is customarily allowed to remain vertical and closed except when being cleaned. Under normal usage of the window It, practically all the vertical and angular adjustment for ventilation is done by manipulation of the lower sash I 8. The upper sash is, however, susceptible of angular movement in the event that it has to be cleaned.

We claim as our invention:

1. In a window structure, th combination of a generally rectangular frame, a pair of sash carriers slidable along the general plane of said frame, a sash pivoted on the lower end por i n of said carriers for angular movement relative thereto, said sash also being susceptible of sliding movement with said carriers along the general plane of said frame, a latch pivoted on one of said carriers adjacent the upper end thereof and manually shiftable between a raised position and a lowered position, a latch stop fixed to the upper end of said sash and susceptible of abutment with said latch when in lowered position, a locking pin fixed to said latch, and a pair of guiding strips mounted inside said frame along the sides thereof, each of said guiding strips being susceptible of slidably receiving a respective one of said carriers, one of said guiding strips being provided with a longitudinal latch channel for the reception of said latch in raised position, said on guiding strip also being provided with an undercut notch for reception of said locking pin when said latch is in raised position.

2. In a window structure having a generally rectangular frame, the combination comprising a pair of slidable sash carriers, a sash bodily slidable with said carriers, pivotal connections between the lower lateral edge portions of said sash and the lower end portions of said carriers, a pair of latches each pivoted on the upper end portion of a respective one of said carriers for movement substantially parallel to the general plan of said frame, each of said latches being shiftable between a first and a second position, a pair of latch stops fixed to said sash adjacent the upper lateral extremities thereof and susceptible of abutting engagement with said latches when the latter are in said first position, a locking pin fixed to each of said latches, and a pair of guiding strips mounted inside the frame along the sides thereof, each of said guiding strips being susceptible of slidably receiving a respective one of said carriers, each of said guiding strips being provided with a longitudina1 latch channel for the reception of one of said latches in said second position, each of said guiding strips also being provided with an undercut notch for the reception of said locking pin and a finger notch spaced from said undercut notch to permit manual release of said latch from said second position.

3. In a sliding and swinging window sash structure having a generally rectangular frame, the combination comprising a vertically slidable sash. a pair of sash carriers, guiding strips mounted on opposite inside faces of the frame, said guiding strips and said sash defining an upright recess on either side of said frame adjacent the front edges thereof, said guiding strips also being susceptible of slidably receiving said sash carriers, means including a pair of pivotal connections interposed between the lower end portion of each of said sash carriers and the lower lateral extremities of said sash, a counterbalancing tensile spring housed within said upright recess and connected between the upper portion of said frame and an abutment on on of the lateral edges of said sash spaced from one of said pivota1 connections, a frictional motion arrester also pivotally connected to said sash by means of said abutment, and a swingable guide bar interposed between the upper end of said frame and said motion arrester, said guid bar being slidable through and engageable with said frictional motion arrester, said guide bar also being housed within said upright recess and in overlying relation with respect to said spring.

4. In a sliding and swinging window sash structure having a generally rectangular upright frame, the combination comprising a vertically slidable sash, guiding strips mounted on opposite inside faces of the frame, said guiding strips and said sash defining upright recesses on either side of said frame adjacent the front edges thereof, a pair of sash carriers longitudinally slidable relative to said guiding strips, a pivotal connection interposed between the lower end portion of each of said sash carriers and the respective lower lateral extremities of said sash, anchor fittings at the top of said frame, a pair of tensile springs each housed within a respective one of said recesses and connected respectively between said anchor fittings at the top of said frame and abutments on the lateral edges of said sash spaced above said pivotal connections, a pair of frictional motion arresting devices pivotally connected to said sash by means of said abutments, guide bars interposed between respective ones of said anchor fittings and said motion arresting devices, said guid bars being telescopically slidable through and within their associated motion arresting devices, said guide bars being housed within respective one of said recesses and in overlying relation with respect to said tensile springs.

OLIEN POLSON. THEODORE JOHN NELSON.

References Cited in the file of this patent UNITED STATES PATENTS 

